Excerpt:
A process for recovery of valuable constituents from potato starch factory waste water is under development. Recovery of protein, amino acids, organic acids and a potash fertilizer should reduce the BOD markedly and provide a more economic waste treatment. Fertilizers containing 32-42% K2S04, 53-560/0 (NH4hS04, and 1% amino acids as well as trace elements from the tuber can be made as a byproduct of the amino acid recovery process. Data needed for design of the potash recovery part of the process are given, including: CICo curves, exhaustion and regeneration rates, resin capacities and product recoveries, and a flow sheet for a proposed process.
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